Question # 1

Which among following is considered as super daemon.

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Sysinit

Grep

Init

Locate

File can have.

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Read access

Write access

Copy access

All of above

Which process is known for initializing a microcomputer with its OS.

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Cold booting

Boot recording

Booting

Warm booting

Shortest job First executes first the job.

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With the least processor needs

That first entered the queue

That has been in the queue for the longest

That last entered the queue

Which scheduling policy is best suited for time sharing operating system.

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Shortest job first

Round robin

First come first serve

Elevator

Which command is concerned with LINUX kernel log messages.

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dmsg

dmesg

cmsg

cmesg

Belady anomaly occurs in

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Optimal replacement

FIFO

LRU

Both in FIFO and LRU

What is the command that can print lines of first file matching with second file.

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Printline

cmp

com

comn

Which is signal user operating system.

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MS-DOS

UNIX

XENIX

LINUX

Dirty bit is used ot show

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Page with corrupted data

Wrong page in memory

Page that a modified after being loaded in the cache memory

Page that is less frequently accessed

Which command is used to set terminal input output characteristics

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Atty

stty

dtty

itty

How applications communicates with kernel.

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Not disclosed by linux team

SSL

System calls

Shell

Kernel minimizes the frequency of disk access by keeping a pool of internal data buffer which helps to increase the response time this is known as.

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Buffer cache

Spooling

Pooling

Virtual memory

How many links are created when we create a directory file.

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1

2

3

4

Solaris is product of.

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IBP

IBM

Microsoft

Sun microsystmes

Which is non pre emptive

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Round robin

FIFO

MS

MSF

Which of the following is always there in a computer.

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Batch system

Operating system

Time sharing system

Controlling system

Problem of thrashing is affected significantly by

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Program structure

Program size

Primary storage size

All of above

Tee command is used in LINUX for.

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Read from an input and write to a standard output and file.

Read from an input

Write to an output

None of above

The system calls in UNIX is written using which language.

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Java

C

C++

Assembly

Default permissions of file can be changed with.

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Group

Chperm

chmod

Chall

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PPSC Computer Science Chapter 19 Operating System Online Test MCQs With Answers

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